Mazda 3 Sedan 2020, Owner'S Manual

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Fuel and Engine Exhaust Precautions
▼
Fuel Requirements
Vehicles with catalytic converters or oxygen sensors must use ONLY UNLEADED
FUEL, which will reduce exhaust emissions and keep spark plug fouling to a
minimum.
To achieve maximum engine performance, use the speci fi ed fuel.
Fuel
Octane Rating
*1
(Anti-knock index)
Regular unleaded fuel 87 [(R+M)/2 method] or above (91 RON or above)
*
1 U.S. federal law requires that octane ratings be posted on gas station pumps.
Fuel with a rating lower than 87 octane (91 RON) will negatively a ff ect the emission
control system performance and could also cause engine knocking and serious
engine damage.
CAUTION

USE ONLY UNLEADED FUEL.
Leaded fuel is harmful to the catalytic converter and oxygen sensors and will lead
to deterioration of the emission control system and or failures.

This vehicle can only use oxygenated fuels containing no more than 10 % ethanol
by volume. Damage to the vehicle may occur when ethanol exceeds this
recommendation, or if the gasoline contains any methanol. Stop using gasohol of
any kind if your vehicle engine is performing poorly.

Never add fuel system additives other than a Mazda genuine product, otherwise
the emission control system could be damaged. Consult an Authorized Mazda
Dealer for details.
Gasoline blended with oxygenates such as alcohol or ether compounds are generally
referred to as oxygenated fuels. The common gasoline blend that can be used with
your vehicle is ethanol blended at no more than 10 %. Gasoline containing alcohol,
such as ethanol or methanol, may be marketed under the name "Gasohol".
Vehicle damage and drivability problems resulting from the use of the following may
not be covered by the warranty.

Gasohol containing more than 10 % ethanol.

Gasoline or gasohol containing methanol.

Leaded fuel or leaded gasohol.
Before Driving
Fuel and Emission
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Mazda3_8JM2-EA - 20H_Edition3_new 2020-12-3 18:39:35